diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f16b41a2a..b3cd0cd80 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,8 +17,8 @@ jobs:
 
       matrix:
         include:
-          - os: ubuntu-22.04
-            cxx: "clang++-15"
+          - os: ubuntu-24.04
+            cxx: "clang++-16"
             link: "dynamic"
             optimization: "debug"
             assert: "debug"
@@ -26,15 +26,16 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "clang-15"
+            cc: "clang-16"
             flags: "-Og -fPIE"
             options: "--enable-isystem"
             packager: "apt"
             packages: ""
 
-          - os: ubuntu-22.04
-            cxx: "clang++-15"
+          - os: ubuntu-24.04
+            cxx: "clang++-16"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -42,15 +43,16 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "clang-15"
+            cc: "clang-16"
             flags: "-Os -fPIE"
             options: "--enable-isystem"
             packager: "apt"
             packages: ""
 
-          - os: ubuntu-22.04
-            cxx: "g++-11"
+          - os: ubuntu-24.04
+            cxx: "g++-12"
             link: "dynamic"
             optimization: "size"
             assert: "ndebug"
@@ -58,15 +60,16 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "gcc-11"
+            cc: "gcc-12"
             flags: "-Os -fPIE"
             options: "--enable-isystem"
             packager: "apt"
             packages: ""
 
-          - os: ubuntu-22.04
-            cxx: "g++-11"
+          - os: ubuntu-24.04
+            cxx: "g++-12"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -74,8 +77,9 @@ jobs:
             detectcpuflags: "detect"
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "gcc-11"
+            cc: "gcc-12"
             flags: "-Os -g --coverage -fPIE"
             options: "--enable-isystem"
             packager: "apt"
@@ -90,12 +94,13 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: "llvm@16"
             secp256k1: "--build-secp256k1"
             cc: "clang"
             flags: "-Os -fPIE -DBOOST_NO_CXX98_FUNCTION_BASE"
             options: "--enable-isystem"
             packager: "brew"
-            packages: "icu4c"
+            packages: "llvm@16 icu4c"
 
           - os: macos-latest
             cxx: "clang++"
@@ -106,12 +111,13 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: "llvm@16"
             secp256k1: "--build-secp256k1"
             cc: "clang"
             flags: "-Os -fvisibility=hidden -fPIE -DBOOST_NO_CXX98_FUNCTION_BASE"
             options: "--enable-isystem"
             packager: "brew"
-            packages: "icu4c"
+            packages: "llvm@16 icu4c"
 
 
     runs-on: ${{ matrix.os }}
@@ -141,6 +147,9 @@ jobs:
         if: ${{ matrix.packager == 'brew' }}
         run: |
           brew install autoconf automake libtool ${{ matrix.packages }}
+          if [[ -n ${{ matrix.llvm }} ]]; then
+              echo "PATH=/opt/homebrew/opt/${{ matrix.llvm }}/bin:$PATH" >> $GITHUB_ENV
+          fi
 
       - name: Determine CPU flags
         shell: bash
@@ -211,9 +220,9 @@ jobs:
       - name: Coveralls Calculation
         if: ${{ matrix.coverage == 'cov' }}
         run: |
-          lcov --directory . --capture --output-file coverage.info
-          lcov --remove coverage.info "/usr/*" "${{ env.LIBBITCOIN_SRC_PATH }}prefix/*" "${{ github.workspace }}/examples/*" "${{ github.workspace }}/test/*" --output-file coverage.info
-          lcov --list coverage.info
+          lcov --directory . --capture --ignore-errors version --output-file coverage.info
+          lcov --remove coverage.info "/usr/*" "${{ env.LIBBITCOIN_SRC_PATH }}prefix/*" "${{ github.workspace }}/examples/*" "${{ github.workspace }}/test/*" --output-file --ignore-errors version coverage.info
+          lcov --list --ignore-errors version coverage.info
 
       - name: Coveralls.io Upload
         if: ${{ matrix.coverage == 'cov' }}
@@ -279,8 +288,8 @@ jobs:
 
       matrix:
         include:
-          - os: ubuntu-22.04
-            cxx: "clang++-15"
+          - os: ubuntu-24.04
+            cxx: "clang++-16"
             link: "dynamic"
             optimization: "debug"
             assert: "debug"
@@ -288,15 +297,16 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "clang-15"
+            cc: "clang-16"
             flags: "-Og -fPIE"
             options: ""
             packager: "apt"
             packages: ""
 
-          - os: ubuntu-22.04
-            cxx: "clang++-15"
+          - os: ubuntu-24.04
+            cxx: "clang++-16"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -304,15 +314,16 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "clang-15"
+            cc: "clang-16"
             flags: "-Os -fPIE"
             options: ""
             packager: "apt"
             packages: ""
 
-          - os: ubuntu-22.04
-            cxx: "g++-11"
+          - os: ubuntu-24.04
+            cxx: "g++-12"
             link: "dynamic"
             optimization: "size"
             assert: "ndebug"
@@ -320,15 +331,16 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "gcc-11"
+            cc: "gcc-12"
             flags: "-Os -fPIE"
             options: ""
             packager: "apt"
             packages: ""
 
-          - os: ubuntu-22.04
-            cxx: "g++-11"
+          - os: ubuntu-24.04
+            cxx: "g++-12"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -336,8 +348,9 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "gcc-11"
+            cc: "gcc-12"
             flags: "-Os -fPIE"
             options: ""
             packager: "apt"
@@ -352,12 +365,13 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: "llvm@16"
             secp256k1: "--build-secp256k1"
             cc: "clang"
             flags: "-Os -fPIE -DBOOST_NO_CXX98_FUNCTION_BASE"
             options: ""
             packager: "brew"
-            packages: "icu4c"
+            packages: "llvm@16 icu4c"
 
           - os: macos-latest
             cxx: "clang++"
@@ -368,12 +382,13 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: "llvm@16"
             secp256k1: "--build-secp256k1"
             cc: "clang"
             flags: "-Os -fvisibility=hidden -fPIE -DBOOST_NO_CXX98_FUNCTION_BASE"
             options: ""
             packager: "brew"
-            packages: "icu4c"
+            packages: "llvm@16 icu4c"
 
 
     runs-on: ${{ matrix.os }}
@@ -403,6 +418,9 @@ jobs:
         if: ${{ matrix.packager == 'brew' }}
         run: |
           brew install autoconf automake libtool ${{ matrix.packages }}
+          if [[ -n ${{ matrix.llvm }} ]]; then
+              echo "PATH=/opt/homebrew/opt/${{ matrix.llvm }}/bin:$PATH" >> $GITHUB_ENV
+          fi
 
       - name: Determine CPU flags
         shell: bash
@@ -476,9 +494,9 @@ jobs:
       - name: Coveralls Calculation
         if: ${{ matrix.coverage == 'cov' }}
         run: |
-          lcov --directory . --capture --output-file coverage.info
-          lcov --remove coverage.info "/usr/*" "${{ env.LIBBITCOIN_SRC_PATH }}prefix/*" "${{ github.workspace }}/examples/*" "${{ github.workspace }}/test/*" --output-file coverage.info
-          lcov --list coverage.info
+          lcov --directory . --capture --ignore-errors version --output-file coverage.info
+          lcov --remove coverage.info "/usr/*" "${{ env.LIBBITCOIN_SRC_PATH }}prefix/*" "${{ github.workspace }}/examples/*" "${{ github.workspace }}/test/*" --output-file --ignore-errors version coverage.info
+          lcov --list --ignore-errors version coverage.info
 
       - name: Coveralls.io Upload
         if: ${{ matrix.coverage == 'cov' }}
@@ -554,9 +572,9 @@ jobs:
 
       matrix:
         include:
-          - os: ubuntu-22.04
+          - os: ubuntu-24.04
             preset: "nix-gnu-debug-shared"
-            cxx: "clang++-15"
+            cxx: "clang++-16"
             link: "dynamic"
             optimization: "debug"
             assert: "debug"
@@ -564,16 +582,17 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "clang-15"
+            cc: "clang-16"
             flags: "-Og -fPIE"
             options: ""
             packager: "apt"
             packages: ""
 
-          - os: ubuntu-22.04
+          - os: ubuntu-24.04
             preset: "nix-gnu-release-static"
-            cxx: "clang++-15"
+            cxx: "clang++-16"
             link: "static"
             optimization: "size"
             assert: "ndebug"
@@ -581,16 +600,17 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: "--build-icu --with-icu"
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "clang-15"
+            cc: "clang-16"
             flags: "-Os -fPIE"
             options: ""
             packager: "apt"
             packages: ""
 
-          - os: ubuntu-22.04
+          - os: ubuntu-24.04
             preset: "nix-gnu-release-shared"
-            cxx: "g++-11"
+            cxx: "g++-12"
             link: "dynamic"
             optimization: "size"
             assert: "ndebug"
@@ -598,8 +618,9 @@ jobs:
             detectcpuflags: "ignore"
             boost: "--build-boost"
             icu: ""
+            llvm: ""
             secp256k1: "--build-secp256k1"
-            cc: "gcc-11"
+            cc: "gcc-12"
             flags: "-Os -fPIE"
             options: ""
             packager: "apt"
@@ -633,6 +654,9 @@ jobs:
         if: ${{ matrix.packager == 'brew' }}
         run: |
           brew install autoconf automake libtool ${{ matrix.packages }}
+          if [[ -n ${{ matrix.llvm }} ]]; then
+              echo "PATH=/opt/homebrew/opt/${{ matrix.llvm }}/bin:$PATH" >> $GITHUB_ENV
+          fi
 
       - name: Determine CPU flags
         shell: bash
@@ -707,9 +731,9 @@ jobs:
       - name: Coveralls Calculation
         if: ${{ matrix.coverage == 'cov' }}
         run: |
-          lcov --directory . --capture --output-file coverage.info
-          lcov --remove coverage.info "/usr/*" "${{ env.LIBBITCOIN_SRC_PATH }}prefix/*" "${{ github.workspace }}/examples/*" "${{ github.workspace }}/test/*" --output-file coverage.info
-          lcov --list coverage.info
+          lcov --directory . --capture --ignore-errors version --output-file coverage.info
+          lcov --remove coverage.info "/usr/*" "${{ env.LIBBITCOIN_SRC_PATH }}prefix/*" "${{ github.workspace }}/examples/*" "${{ github.workspace }}/test/*" --output-file --ignore-errors version coverage.info
+          lcov --list --ignore-errors version coverage.info
 
       - name: Coveralls.io Upload
         if: ${{ matrix.coverage == 'cov' }}